Why is NSTableView not reloading? - swift

Question

I'm still very new to programming in Swift, (and never with Objective C). What I'm trying to do is add to the NSTableView when I've clicked on an item in the current tableview. The items seem to be adding when clicked, but the table does not seem to be refreshing with the new things in the array.
I've tried various things over the last few days, getting it to run reloadData on main thread and UI thread, etc but I'm feel like I'm just hitting the wall (it surely can't be this hard to do something so simple like I can in a couple minutes in Java)....
Have I missed something very obvious? (Code below)
class TableViewController: NSTableView, NSTableViewDataSource, NSTableViewDelegate {
var items: [String] = ["Eggs", "Milk"]
func tableView(tableView: NSTableView, viewForTableColumn tableColumn: NSTableColumn?, row: Int) -> NSView? {
let result : TableCell = tableView.makeViewWithIdentifier(tableColumn!.identifier, owner: self) as! TableCell
result.itemField.stringValue = items[row]
return result
}
func numberOfRowsInTableView(tableView: NSTableView) -> Int {
return items.count
}
func tableViewSelectionDidChange(notification: NSNotification) {
let index = notification.object!.selectedRow
if (index != -1) {
NSLog("#%d", index)
items.append("Blah")
NSLog("#%d", items.count)
dispatch_async(dispatch_get_main_queue(), { () -> Void in
self.reloadData()
})
}
}
func relloadData() { //relload is not a typo
self.reloadData()
}
}

Answer 1

If you're binding your user interface to the items property of your view controller subclass, you need to mark it as it a Dynamic Variable:
dynamic var items: [String] = ["Eggs", "Milk"]
Place the dynamic keyword before the property declaration and I think it will solve your problem.
Note that Ken's comment also makes a good point in that this code probably should be written as an NSViewController subclass, instead of a subclass of NSTableView.
If you're using Storyboards, the custom view controller subclass would be a View Controller object for the view containing your table view. If you're using a xib file for the view, the view controller subclass would be the File's Owner. In either case, you would connect the table view's delegate and data source outlets to that object.